Has anyone got recommendations for podcasts that provide useful information to help one advance as a musician? Could be guitar specific, or theory oriented, maybe on music composition in general. I am looking for density of information. I am not interested in discussions of gear, nor do I have much tolerance for man-children killing time talking about how much beer they drank at the pub. Or how much they miss drinking beer at the pub (yeah, I am looking at you "The Guitar Hour"). I would have thought an audio format would lend itself to useful musical analysis, but I keep on coming away from sampling podcasts thinking I have wasted my time.